Local density of states in a dirty normal metal connected to a superconductor

Belzig, W. and Bruder, C. and Schon, G.. (1996) Local density of states in a dirty normal metal connected to a superconductor. Physical Review B, Vol. 54, H. 13. pp. 9443-9448.

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Official URL: http://edoc.unibas.ch/dok/A5252862

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A superconductor in contact with a normal metal not only induces superconducting correlations, known as the proximity effect, but also modifies the density of stares at some distance from the interface. These modifications can be resolved experimentally in microstructured systems. We therefore study the local density of states N(E,x) of a superconductor-normal-metal heterostructure. We find a suppression of N(E,x) at small energies, which persists to large distances. If the normal metal forms a thin layer of thickness L(n), a minigap in the density of states appears which is of the order of the Thouless energy similar to HBARD/L(n)(2). A magnetic field suppresses the features. We find good agreement with recent experiments of Gueron et al.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik (Bruder)
UniBasel Contributors:Bruder, Christoph
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Institute of Physics
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:48

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